Enabling Special Pricing in admin (B2B) Causes Duplicate entry sql error.

[geraldbullard]

Loaded 7.003.4.1 (B2B Installed)
http://dev2.thereactorworks.com/bcseeds/70/admin/

When attempting to enable special pricing in admin from product edit screen >> pricing tab

we get the folowing sql error: 1062: Duplicate entry '309-0-0.0000' for key 'products_id'; insert into lc_products_pricing (products_id, qty_break, price_break, group_id, tax_class_id, special_status, special_price, special_start, special_end, date_added) values (309, -1, 0, 0, 0, '0', '0.00', '0000-00-00 00:00:00', '0000-00-00 00:00:00', now())

I checked the database immediately after this attempt and found that there were 2 identical entries in the lc_products_pricing table as the following grabilla shows:

http://grabilla.com/05912-0d1c0dde-9060-47fd-8162-ccd8e84a06bc.png

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